Marco [Tue, 21 Feb 2017 04:15:40 +0000 (20:15 -0800)]
vp9: Fix for non-rd pickmode for high-bitdepth build.
Use the simple block_yrd under certain conditions.
The optimization code is completed but the speed is still slower
(~6% on 720p) than the low-bitdepth build.
For now, use the more complex block_yrd under certain conditions
(always use it for speed <= 5, otherwise use it on key frames and for
bsize >= 32x32).
This gives about ~2-3% gain in quality for speed 7 on RTC set
(over high bitdepth build), with about the same encoder fps as the
low bitdepth build.
paulwilkins [Wed, 15 Feb 2017 16:41:38 +0000 (16:41 +0000)]
Change to prediction decay calculation.
This change subtracts out low complexity intra regions that are also low
error in the inter domain, in the calculation of the frame prediction decay.
The rationale here his that low complexity regions (such as sky) do not imply
high prediction decay in the same way as high error intra or neutral blocks.
The effect of this is small in most clips but in a few clips it can be > 10%.
(E.g. In to tree)
Johann Koenig [Thu, 16 Feb 2017 20:34:48 +0000 (20:34 +0000)]
Merge changes I267050a5,Iebade0ef,Id96a8df3
* changes:
quantize_fp_32x32 highbd ssse3: enable existing function
quantize_fp highbd ssse3: use tran_low_t for coeff
quantize_fp highbd sse2: use tran_low_t for coeff
Johann [Thu, 16 Feb 2017 01:17:45 +0000 (17:17 -0800)]
bitdepth conversion: really use num elements
The previous implementation confused bit/bytes/elements. It was using
'32' as the multiplier but that was mistakenly adopted because a 32x32
transform embedded the stride.
Marco [Wed, 15 Feb 2017 21:51:14 +0000 (13:51 -0800)]
vp9: Some code cleanup for aq-mode = 3.
The weight segment needs to only be computed once per frame,
so remove it from the funciton vp9_cyclic_refresh_rc_bits_per_mb(),
which is called within a loop inside vp9_rc_regulate_q.
Marco [Wed, 15 Feb 2017 17:18:34 +0000 (09:18 -0800)]
Vp9: Speed 8 aq-mode=3: Reduce computation in estimating bits per mb.
vp9_compute_qdelta_by_rate has almost 2% overhead in profiling on Nexus 6.
Reduce the calling of that function in speed 8 by estimating the delta-q.
Both rtc and rtc_derf show little/no change in avg psnr/ssim.
Encoding speed is 2~3% faster on Nexus 6.
paulwilkins [Wed, 15 Feb 2017 10:33:10 +0000 (10:33 +0000)]
Disconnect ARF breakout from frame boost.
This small change replaces the frame boost check in the arf group
length break out clause with a test against a prediction decay value.
The boost value is in fact partly dependent on the decay value but
this change means that the per frame boost calculation can be adjusted
without influencing the group length calculation.
The value chosen gives a close match on all the test sets with the previous
code (on average) but it was noted that a lower threshold was slightly better
for 1080P and up and a slightly higher value for small image sizes.
(Yunqing Wang)
This patch implements the row-based multi-threading within tiles in
the encoding pass, and substantially speeds up the multi-threaded
encoder in VP9.
Speed tests at speed 1 on STDHD(using 4 tiles) set show that the
average speedups of the encoding pass(second pass in the 2-pass
encoding) is 7% while using 2 threads, 16% while using 4 threads,
85% while using 8 threads, and 116% while using 16 threads.
Johann [Tue, 14 Feb 2017 22:26:09 +0000 (14:26 -0800)]
Use 'packssdw' for loading tran_low_t values
This matches bitdepth_conversion_sse2.asm and produces substantially
better assembly. The old way had lots of 'movzwl' and 'shl' and storing
back to memory before loading into an xmm register.
Johann [Tue, 31 Jan 2017 23:18:40 +0000 (15:18 -0800)]
Remove UNINITIALIZED_IS_SAFE
Where clang static analysis or gcc -Wmaybe-uninitialized warns of
uninitialized values, assign 0 to ints, MB_MODE_COUNT to
MB_PREDICTION_MODE, and B_MODE_COUNT to B_PREDICTION_MODE.
Assert that the modes have been changed from the invalid value by
the end of the function.
Yunqing Wang [Mon, 13 Feb 2017 20:29:31 +0000 (12:29 -0800)]
The bitstream bit match test in multi-threaded encoder
While the new-mt mode is enabled(namely, allowing to use row-based
multi-threading in encoder), several speed features that adaptively
adjust encoding parameters during encoding would cause mismatch
between single-thread encoded bitstream and multi-thread encoded
bitstream. This patch provides a set_control API to disable these
features, so that the bit match bitstream is obtained in the unit
test.
James Zern [Mon, 13 Feb 2017 19:29:39 +0000 (11:29 -0800)]
cosmetics,vp9_ratectrl: apply clang-format
broken since: c3f095c8b Merge "Fix to avoid abrupt relaxation of max qindex in recode path" 5f21aba4b Fix to avoid abrupt relaxation of max qindex in recode path
the original change pre-dated the addition of .clang-format
paulwilkins [Thu, 5 Jan 2017 12:35:53 +0000 (12:35 +0000)]
Aggressive VBR method.
VBR method that allows a wider Q range for the first normal frame
in each ARF group and then centers the min - max range for the rest of
the arf group on the chosen Q value for that first frame.
This allows for quite rapid adjustment of the active Q range even if the
initial estimate is poor.
In some cases where the ARF frames themselves are tending to
undershoot but the normal frames are overshooting this can still give
net undershoot. This can be corrected by allowing a larger Q delta for
arf frames but is usually is a sign that the allocation to the arfs was to
high.
Marco [Tue, 7 Feb 2017 19:46:36 +0000 (11:46 -0800)]
vp9: Non-rd mode: use simple block_yrd for 8 bit high bitdepth builds
Temporary fix until optimization work for block_yrd is completed.
This essentially reverts back to the state before the change:
https://chromium-review.googlesource.com/c/433821/
Compression loss is about ~5-6% on RTC set.
Speed-up (from using this simple/model-based block_yrd) over the low
bitdepth builds (which uses more complex block_yrd) is ~5% on 720p.
Linfeng Zhang [Tue, 7 Feb 2017 18:06:21 +0000 (10:06 -0800)]
Add vpx_idct16x16_38_add_neon()
The RunQuantCheck() test on it exposes 16-bit overflow in stage 7 of
pass 2. Change to use saturating add/sub for both
vpx_idct16x16_38_add_neon() and vpx_idct16x16_256_add_neon() for high
bitdepth.
projects / libvpx / log